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TiO_2包覆的尖晶石LiMn_2O_4的电化学性能 被引量:4

Electrochemical performance of spinel LiMn_2O_4 coated with TiO_2
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摘要 用超声波振荡法,将粒径约为20nm、用溶胶-凝胶法合戍的TiO2颗粒包覆在流变相法合成的LiMn2O4表面,再在600℃下处理2h,得到TiO2包覆的尖晶石LiMn2O4。在3.0~4.4V,产物以1.0C充放电的首次放电比容量为121.7mAh/g.第100次循环的放电比容量为108.3mAh/g;以0.5C充放电的首次放电比容量为126.7mAh/g,第200次循环的容量保持率为86.0%。 TiO2 with particle size about 20 nm prepared by sol-gel method was coated on the surface of LiMn2O4 prepared by rheological phase reaction method via ultrasonic wave oscillation method, then treated at 600 ℃ for 2 h to obtain the spinel LiMn2O4 coated w, ith TiO2. At 3.0 - 4.4 V, the initial specific discharge capacity of the product charge-discharge at 1.0 C was 121.7 mAh/g, the specific discharge capacity at the 100th cycle was 108.3 mAh/g, the initial specific discharge capacity charge-discharge at 0.5 C was 126.7 mAh/g,the capacity retention at the 200th cycle was 86.0%.
出处 《电池》 CAS CSCD 北大核心 2009年第5期257-259,共3页 Battery Bimonthly
关键词 锂离子电池 尖晶石 二氧化钛(TiO2) 流变相反应 Li-ion battery spinel titanium dioxide(TiO2) rheological phrase reaction
作者简介 冯传启(1957-),男,湖北人,湖北大学化学与化工学院教授,博士,研究方向:锂离子电池电极材料,本文联系人; 李华(1986-),女,湖北人,湖北大学化学与化工学院硕士生,研究方向:无机功能材料; 王世银(1982-),男,湖北人,湖北大学化学与化工学院硕士生,研究方向:无机功能材料; 李丽(1985-),女,湖北人,湖北大学化学与化工学院硕士生.研究方向:无机功能材料。
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参考文献10

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共引文献2

同被引文献22

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